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CVE-2026-19446— Vulnerabilities in IBM AIX and PowerVM VIOS

Quick assessment

Affected
IBM AIX
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

IBM AIX 7.2 和 7.3，以及 IBM PowerVM VIOS 4.1 允许远程未认证的攻击者向可访问的 RPC 服务发送特制的 UDP 数据包，导致系统完全不可用，并需要重启 LPAR（逻辑分区）。

CVSS 7.5 · High EPSS 1.03% · P61

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 3

VendorProduct Version RangeStatus
IBM AIX 7.2 affected
7.3 affected
IBM PowerVM VIOS 4.1 affected
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I. Basic Information for CVE-2026-19446

Vulnerability Information
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Vulnerability Title
Vulnerabilities in IBM AIX and PowerVM VIOS
Source: CVE Program / CVE List V5
Vulnerability Description
IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 allows a remote unauthenticated attacker can send a crafted UDP packet to a reachable RPC service, resulting in complete system unavailability and requiring an LPAR restart.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
IBM AIX 7.2 cpe:2.3:a:ibm:aix:7.2:*:*:*:*:*:*:*
IBM PowerVM VIOS 4.1 cpe:2.3:a:ibm:powervm_vios:4.1:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-19446

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III. Intelligence Information for CVE-2026-19446

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Other References for CVE-2026-19446 (1)

Same Patch Batch · IBM · 2026-08-20 · 75 CVEs total

CVE-2026-18835 9.9 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-17040 9.8 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-17118 9.8 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-17122 9.8 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-17136 9.8 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-17141 9.8 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-17142 9.8 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-17145 9.8 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-17152 9.8 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-17157 9.8 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-17160 9.8 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-17422 9.3 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-16926 9.1 CRITICAL Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-18832 8.8 HIGH Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-19449 8.8 HIGH Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-17436 8.8 HIGH Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-16932 8.8 HIGH Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-16934 8.8 HIGH Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-16996 8.8 HIGH Vulnerabilities in IBM AIX and PowerVM VIOS
CVE-2026-16936 8.8 HIGH Vulnerabilities in IBM AIX and PowerVM VIOS

Showing top 20 of 75 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: AIX
Same vendor: IBM
Same weakness: CWE-400

V. Comments for CVE-2026-19446

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